如何以百分比显示图像的rgb值

时间:2016-09-08 09:35:06

标签: php image colors rgb

我想以百分比显示图像的RGB值。

例如,如果十六进制颜色为#000000,如何将其显示为%代码(百分比),如rgb(0%,0%,0%)?

1 个答案:

答案 0 :(得分:0)

试试这个,

function hex2rgb($hex) {
   $hex = str_replace("#", "", $hex);

   if(strlen($hex) == 3) {
      $r = hexdec(substr($hex,0,1).substr($hex,0,1));
      $g = hexdec(substr($hex,1,1).substr($hex,1,1));
      $b = hexdec(substr($hex,2,1).substr($hex,2,1));
   } else {
      $r = hexdec(substr($hex,0,2));
      $g = hexdec(substr($hex,2,2));
      $b = hexdec(substr($hex,4,2));
   }
   $rgb = array($r, $g, $b);
   //return implode(",", $rgb); // returns the rgb values separated by commas
   return $rgb; // returns an array with the rgb values
}

<强>输出:

Array ( [0] => 204 [1] => 204 [2] => 0 )
//rgb(204,204,0)

<强> DEMO